JT Sprockets

Online Catalogue

Yamaha TDM850 (3VD)

1991 to 1995

Front Sprocket

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF520RB

Teeth: 16

Available Sizes: 14, 15, 16, 17

Steel Front Sprocket

Part Number: JTF520

Teeth: 16

Available Sizes: 14, 15, 16, 17

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR867

Teeth: 44

Available Sizes: 42, 43, 44

Drive Chain

Pitch: 525

Length: 114

Please note that the chain shown in this listing is for size reference only. For the correct chain type and grade, please refer to the vehicle's manufacturer manual.

Gear Ratio Chart

TeethFront Sprocket
Rear Sprocket443.14

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)